Explaining the trend in the reactivity of the halogens
1 mark · EasyState the colour you would expect for the vapour of bromine at room temperature based on group trends.
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Red-brown (or orange-brown)
Also accept: Orange-brown; Reddish-brown
Common mistakes: Yellow; Green; Purple
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Marking points
B1 · 1 mark · States 'red-brown', 'orange-brown' or 'reddish-brown'.
Worked solution
Bromine has a red-brown (or orange-brown) vapour at room temperature according to group trends.